Search found 18398 matches
- Tue Jan 25, 2022 11:40 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Video: Comet Leonard over One Hour (2022 Jan 25)
- Replies: 3
- Views: 2504
Re: APOD: Video: Comet Leonard over One Hour (2022 Jan 25)
https://www.youtube.com/watch?v=uGzl6RG-8iY Aw! No picture today! New; for me! (solar magnetic reconnection!) Knowing about them; and being able to use that information; sounds complex to me! That's true there isn't 'an' astronomy picture today. It's actually a series of moving pictures! Sometimes ...
- Tue Jan 25, 2022 4:15 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Clouds of the Carina Nebula (2021 May 02)
- Replies: 8
- Views: 6037
Re: APOD: Clouds of the Carina Nebula (2021 May 02)
Click to play embedded YouTube video.
- Tue Jan 25, 2022 4:08 pm
- Forum: The Communications Center: Breaking Science News
- Topic: HEAPOW: Becoming a Spider (2022 Jan 24)
- Replies: 2
- Views: 1508
Re: HEAPOW: Becoming a Spider (2022 Jan 24)
Female "black widows" usually exhibit an infrared millisecondglass on the ventral surface of the abdomen.
Clearly a priority opportunity target for the Webb
Clearly a priority opportunity target for the Webb
- Tue Jan 25, 2022 3:38 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Rigel and the Witch Head Nebula (2022 Jan 24)
- Replies: 38
- Views: 12418
Re: APOD: Rigel and the Witch Head Nebula (2022 Jan 24)
why can't Witch Head Nebula be an aging HH object (10 ky old) in the thick of giant stars' bubble wall? It is not the sort of environment I would expect: Candidates for pre-main sequence stars and some classic T-Tauri stars have been found deep within the nebula. Do I get it right: a star is welcom...
- Tue Jan 25, 2022 4:16 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Rigel and the Witch Head Nebula (2022 Jan 24)
- Replies: 38
- Views: 12418
Re: APOD: Rigel and the Witch Head Nebula (2022 Jan 24)
favorable circumstances for star formation well, why can't Witch Head Nebula be an aging HH object (10 ky old) in the thick of giant stars' bubble wall? It is not the sort of environment I would expect: Candidates for pre-main sequence stars and some classic T-Tauri stars have been found deep withi...
- Tue Jan 25, 2022 2:17 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Rigel and the Witch Head Nebula (2022 Jan 24)
- Replies: 38
- Views: 12418
Re: APOD: Rigel and the Witch Head Nebula (2022 Jan 24)
https://cdn.spacetelescope.org/archives/images/screen/opo9524a.jpg This jet (bottom image) from a young star bears a passing structural resemblance to the Witch Head Nebula. (The image is from https://esahubble.org/images/opo9524a/, and it suggests the jet is monodirectional.) Bottom image This vie...
- Mon Jan 24, 2022 2:23 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Rigel and the Witch Head Nebula (2022 Jan 24)
- Replies: 38
- Views: 12418
Re: APOD: Rigel and the Witch Head Nebula (2022 Jan 24)
https://upload.wikimedia.org/wikipedia/commons/2/24/Gina_Lollobrigida_Fata_Turchina.jpg As a Color Commentator (and a crazy lover of all things blue), I can't help noticing the the rather non-blue color of the Witch Head Nebula in the APOD. Why is the Witch Head so lacking of azure hues in this APO...
- Mon Jan 24, 2022 2:21 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Rigel and the Witch Head Nebula (2022 Jan 24)
- Replies: 38
- Views: 12418
Re: APOD: Rigel and the Witch Head Nebula (2022 Jan 24)
https://upload.wikimedia.org/wikipedia/commons/8/8a/Ride_a_cock_horse_to_Banbury_Cross_1_-_WW_Denslow_-_Project_Gutenberg_etext_18546.jpg Sorry to ride my hobby horse again, but this nebula looks neither 'creepy' nor like a witch. Your pareidolia is broken. Maybe you should have that looked at! ;-)...
- Mon Jan 24, 2022 1:43 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: James Webb Space Telescope (JWST)
- Replies: 104
- Views: 90781
Re: James Webb Space Telescope (JWST)
https://www.youtube.com/watch?v=pWklR2PBfQU NASA Science Live:Scheduled for 3:00 PM Jan 24, 2022 What’s Next for the James Webb Space Telescope? <<The past month has been an exciting one for NASA’s James Webb Space Telescope — from launch in tropical French Guiana, to the two-week unfolding of this...
- Sun Jan 23, 2022 11:28 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Saturn, Tethys, Rings, and Shadows (2022 Jan 23)
- Replies: 16
- Views: 5820
- Sun Jan 23, 2022 6:10 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Full Moon and the Dancer (2022 Jan 22)
- Replies: 13
- Views: 5767
Re: APOD: The Full Moon and the Dancer (2022 Jan 22)
Cousin Ricky wrote: ↑Sun Jan 23, 2022 3:51 pm
So, you’re saying I should look at the Moon without my glasses?
- Or vice versa.
- Sun Jan 23, 2022 6:07 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Saturn, Tethys, Rings, and Shadows (2022 Jan 23)
- Replies: 16
- Views: 5820
Re: APOD: Saturn, Tethys, Rings, and Shadows (2022 Jan 23)
https://upload.wikimedia.org/wikipedia/commons/7/7f/Animation_of_Polydeuces%27s_orbit_relative_to_Saturn_and_Dione.gif Telesto (24 kilometers, or 15 miles across) shares the orbit of Saturn's moon Tethys (1,071 kilometers, or 665 miles across), leading the larger moon in its path by 60 degrees. Sim...
- Sun Jan 23, 2022 2:11 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Young Star Jet MHO 2147 (2022 Jan 21)
- Replies: 27
- Views: 7397
- Sat Jan 22, 2022 9:40 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Young Star Jet MHO 2147 (2022 Jan 21)
- Replies: 27
- Views: 7397
Re: APOD: Young Star Jet MHO 2147 (2022 Jan 21)
https://www.youtube.com/watch?v=Ctv0x3jWQM8 And I had no idea what your first " Word!!! " was meant to imply. Hey, maybe that was just my own personal use of the English language going for a walk in the park. Ann's use of "word" as an interjection to express vehement agreement i...
- Sat Jan 22, 2022 7:09 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Young Star Jet MHO 2147 (2022 Jan 21)
- Replies: 27
- Views: 7397
Re: APOD: Young Star Jet MHO 2147 (2022 Jan 21)
how come they map a longer wavelength to blue and a shorter wavelength to orange? Word!!! And thanks, Victor, I prefer your color scheme. And you said that you didn't care: So what do the colors of the APOD mean? Don't ask me. I have no idea. All I'm sure of is that the colors are not "true&qu...
- Sat Jan 22, 2022 6:42 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Full Moon and the Dancer (2022 Jan 22)
- Replies: 13
- Views: 5767
Re: APOD: The Full Moon and the Dancer (2022 Jan 22)
I was never able to picture a face in the Moon until I saw it explained in detail in a book, meticulously matching lunar maria to facial features. And now, in the years since I read that book, I just can't see the face any more. Higher contrast plus lower resolution helps: https://upload.wikimedia....
- Sat Jan 22, 2022 2:31 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Full Moon and the Dancer (2022 Jan 22)
- Replies: 13
- Views: 5767
Re: APOD: The Full Moon and the Dancer (2022 Jan 22)
<<Eugene Schieffelin (January 29, 1827 – August 15, 1906) has been considered the primary person responsible for introducing the European starling (Sturnus vulgaris) to North America. Schieffelin was the seventh son of Henry Hamilton Schieffelin (1783–1865) and Maria Theresa (née Bradhurst) Schieff...
- Sat Jan 22, 2022 1:58 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Young Star Jet MHO 2147 (2022 Jan 21)
- Replies: 27
- Views: 7397
Re: APOD: Young Star Jet MHO 2147 (2022 Jan 21)
Band . . . Wave-length ------------------------------- H 2 (1-0). . 2.122 μm K. . . . . . 1.635 μm how come they map a longer wavelength to blue and a shorter wavelength to orange? https://www.youtube.com/watch?v=UAJEbuTBodI Word!!! And thanks, Victor, I prefer your color scheme. And you said that ...
- Fri Jan 21, 2022 9:29 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Young Star Jet MHO 2147 (2022 Jan 21)
- Replies: 27
- Views: 7397
Re: APOD: Young Star Jet MHO 2147 (2022 Jan 21)
So what do the colors of the APOD mean? Don't ask me. I have no idea. All I'm sure of is that the colors are not "true" or optical ones... <<The Gemini South Adaptive Optics Imager (GSAOI) is a near-infrared adaptive optics camera used with the Gemini Multi-conjugate Adaptive Optics Syste...
- Fri Jan 21, 2022 8:34 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: From Orion to the Southern Cross (2022 Jan 18)
- Replies: 23
- Views: 8051
Re: APOD: From Orion to the Southern Cross (2022 Jan 18)
This isn't : 169 = [14]. This IS : 169 => Sum of proper factors 1 & 13 = [14]. It all involves a generalization of the classical concept of: A perfect number like: 28 => Sum of proper factors 1, 2, 4, 7 & 14 = [28]. In this [sum of proper factors] evolving universe: All primes => [1]. All p...
- Fri Jan 21, 2022 1:45 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: From Orion to the Southern Cross (2022 Jan 18)
- Replies: 23
- Views: 8051
Re: APOD: From Orion to the Southern Cross (2022 Jan 18)
My bad... correction : 1489 is a prime number . The only proper factors of the square of a prime number p are: 1 & p. Hence, p 2 => [1 + p] I'm not even sure what that means, again take p=13 ... 169 => [14] ??? This isn't : 169 = [14]. This IS : 169 => Sum of proper factors 1 & 13 = [14]. I...
- Thu Jan 20, 2022 9:45 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: From Orion to the Southern Cross (2022 Jan 18)
- Replies: 23
- Views: 8051
Re: APOD: From Orion to the Southern Cross (2022 Jan 18)
1489 is a prime number . The only proper factors of the square of a prime number p are: 1 & p. Hence, [1+p 2 ] => [1 + p] I don't think that follows. For example, let p = 13 [170] ??? [14} And more than that, for 1489 in particular, 1+1489*1489=2217122, the factors of that are {2, 1108561}, and...
- Thu Jan 20, 2022 8:28 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: M31: The Andromeda Galaxy (2022 Jan 19)
- Replies: 12
- Views: 4216
Re: APOD: M31: The Andromeda Galaxy (2022 Jan 19)
Most high resolution deep field galaxy images comparable to this show up a menagerie of more distant galaxies. But I could only find a few few dim distant spiral candidates. Have these more distant been edited out? Is this an artifact of Andromeda covering such an expanse? Or are we looking in the ...
- Thu Jan 20, 2022 5:48 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: From Orion to the Southern Cross (2022 Jan 18)
- Replies: 23
- Views: 8051
Re: APOD: From Orion to the Southern Cross (2022 Jan 18)
More cool stuff. But what do you mean by "[1+1489 2 ] => 1490 => {1210 <=> 1184})"? That if you start with 1+1489 2 = 2,217,122 and find its factors and add them, and continue that process, that you will eventually end in the {1210 <=> 1184} amicable pair? If so, that seems hard to believ...
- Thu Jan 20, 2022 2:51 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: NGC 7822 in Cepheus (2022 Jan 20)
- Replies: 4
- Views: 2339
Re: APOD: NGC 7822 in Cepheus (2022 Jan 20)
https://www.youtube.com/watch?v=kKVV23LAkRo Explanation: Hot, young stars and cosmic pillars of gas and dust seem to crowd into NGC 7822. At the edge of a giant molecular cloud toward the northern constellation Cepheus, the glowing star forming region lies about 3,000 light-years away. Within the n...